1. Division of Biosphere Science, Graduate School of Environmental Science; Hokkaido University, Kita-ku, Sapporo; Hokkaido 060-0810 Japan
2. Senckenberg Center for Human Evolution and Paleoenvironment an der Eberhard Karls Universität, Sigwartstraße 10; Tübingen D-72076 Germany
3. Fachbereich Geowissenschaften der Eberhard-Karls-Universität Tübingen, Hölderlinstraße 12; Tübingen 72074 Germany
4. Museum für Naturkunde, Leibniz-Institut für Evolutions- & Biodiversitätsforschung an der Humboldt-Universität zu Berlin, Invalidenstraße 43; Berlin 10115 Germany
5. Institute of Ecology and Biological Resources; Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet Street; Hanoi Vietnam
6. Graduate University of Sciences and Technology, Vietnam Academy of Sciences and Technology, 18 Hoang Quoc Viet Street, Cau Giay; Hanoi Vietnam
7. The University Museum, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku; Tokyo 113-0033 Japan
8. Humanities and Sciences; Musashino Art University, Ogawacho 1-736, Kodaira; Tokyo 187-8505 Japan